PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Gaussian mixture learning from noisy data
Nikos Vlassis and Jakob Verbeek
(2004) Technical Report. University of Amsterdam.

Abstract

We address the problem of learning a Gaussian mixture from a set of noisy data points. Each input point has an associated covariance matrix that can be interpreted as the uncertainty by which this point was observed. We derive an EM algorithm that learns a Gaussian mixture that minimizes the Kullback-Leibler divergence to a variable kernel density estimator on the input data. The proposed algorithm performs iterative optimization of a strict bound on the Kullback-Leibler divergence, and is provably convergent.

EPrint Type:Monograph (Technical Report)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Learning/Statistics & Optimisation
ID Code:4228
Deposited By:Jakob Verbeek
Deposited On:06 December 2008